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How Does the Wastegate Work on a Turbo? Everything You Need to Know About!

How Does the Wastegate Work on a Turbo? Everything You Need to Know About!

Are we going to need more efficiency in the car market? How can speed increase? Turbochargers only function on combustion engine engines. Demand for turbochargers is continuing in all areas of automotive, diesel, and petrol engines. The turbo-powered cars are synonymous with race cars, but the reality is quite different. Turbochargers improve engine performance if they use recycled energy from exhaust gases. The result is an increased energy output by smaller engines. In this article, we're going to cover how a turbocharger works, how it increases speed, and the different components that make up the turbocharger.

How Does a Turbo Work?

A turbocharger is a device that uses exhaust gas to spin a turbine. The turbine is connected to a compressor that forces air into the engine. The more air that's forced into the engine, the more fuel can be burned, and the more power the engine can produce.


The turbine in the turbocharger is connected to the engine via a shaft. As the turbine spins, it sucks in air and forces it into the engine. The compressor is also attached to the turbine via the shaft. As the turbine spins, it drives the compressor, which then forces air into the engine.


The amount of air that's forced into the engine is determined by the wastegate. The wastegate is a valve that controls the amount of exhaust gas that goes through the turbine. The more exhaust gas that goes through the turbine, the faster it spins, and the more air that's forced into the engine.

How does the wastegate work on a turbo?

A turbocharger has two main components, the turbine, and the compressor. The turbine is powered by exhaust gases and drives the compressor. The compressor increases the density of air entering the engine (intake air). This gives the engine more oxygen, which means that it can burn more fuel, and produce more power.


The wastegate is a valve that controls the amount of exhaust gas that goes through the turbine. The more exhaust gas that goes through the turbine, the faster it spins, and the more air that's forced into the engine. By controlling the amount of exhaust gas that goes through the turbine, the wastegate can control the amount of air that's forced into the engine, and therefore, the power that the engine produces.


The wastegate is opened and closed by a spring-loaded diaphragm. The diaphragm is actuated by exhaust pressure and controls the position of the wastegate valve. When the engine is operating at low speeds, the exhaust pressure is low, and the wastegate valve is open. This allows all of the exhaust gases to flow past the turbine, and none of the air is forced into the engine.


As the engine speed increases, the exhaust pressure increases. When the exhaust pressure reaches a certain point, it overcomes the force of the spring, and the wastegate valve closes. This redirects the exhaust gases through the turbine, and the air is forced into the engine.


The amount of exhaust gas that flows through the turbine, and the amount of air that's forced into the engine, can be controlled by adjusting the spring-loaded diaphragm. By adjusting the diaphragm, the wastegate can be opened or closed to control the amount of exhaust gas that flows through the turbine, and the amount of air that's forced into the engine.


The wastegate can also be controlled by a computer. The computer can open or close the wastegate based on inputs from sensors that measure engine speed, throttle position, and exhaust pressure. By controlling the wastegate with a computer, the amount of air that's forced into the engine can be controlled more precisely, and the power that the engine produces can be optimized for different driving conditions.

The Top 5 incorrect statements we often hear about wastegates

When it comes to wastegates, there are a lot of misconceptions out there. We've compiled a list of the top 5 incorrect statements we often hear about wastegates and set the record straight.

1. "I'm not making much power, I don't need a wastegate."

Ready to destroy your engine or burn up a turbo?  If you don't have a wastegate regulating boost pressure, that's exactly what will happen. Without a wastegate, boost pressure will continue to rise until something has to give. That something is usually either your engine or turbocharger.

2. "I can just adjust my wastegate to get the boost pressure I want."

Wastegates are designed to control and boost pressure within a certain range. Adjusting the wastegate to get more boost than the turbocharger is designed for will result in reduced reliability and longevity of the turbocharger.

3. Wastegates won't operate in high temperatures engine bays

External wastegates are generally installed in the hot water section. This is where the exhaust gas meets and creates heat. Generally, an air-cooled wastegate must be placed where it should not get too hot, cooled by the exhaust, and by the exhaust that does not flow. Fresh air keeps wastegates in optimum condition, prolongs their life, and minimizes the possibility of failure in the future. Titan Turbo's wastegates are specially designed and tested to handle extremely high temperatures.

4. "I'm getting turbo flutter, I need a new wastegate."

Turbo flutter and compressor surges are two completely different things. Flutter occurs when there is a sudden drop in pressure after the throttle is closed and then reopened quickly. This can be caused by many things, but a wastegate is not one of them. 

#5 I can't turn up the boost anymore, I've maxed our wastegate spring pressure."

If you've maxed out the spring pressure on your wastegate and you're still not seeing the boost levels you want, there are a few things that could be going on.

  • First, make sure there are no leaks in your system. A small leak can cause big boost pressure losses.
  • Next, check your turbocharger. If the compressor is damaged or worn out, it might not be able to create the boost pressure you want no matter how much pressure you put on the wastegate.
  • Finally, make sure your engine can handle the amount of boost you're trying to produce. If you're pushing too much boost for your engine, you'll never see the boost levels you want, no matter how well your wastegate is working.

Looking For Performance? Titan Turbo Can Help!

If you're looking for performance, Titan Turbo has the wastegates and turbochargers you need to get the job done. Our selection of products has been carefully chosen to provide the best possible performance for your vehicle.


Don't see what you're looking for? Contact us today and let us know what you need. We'll be happy to help you find the right products for your application.

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